Abstract: A rotary electrical machine, which is typically but not exclusively a motor vehicle alternator, is of the type comprising a casing consisting of two parts, each having a radial support surface, these support surfaces being opposed to each other with a stator lying between them. Between each end face of the stator and the corresponding support surface, there is at least one interposed elastic member which is in axial compression when the two casing parts are secured together. A set of elastic cushion blocks, spaced apart on a pitch circle defined by one of the casing parts, is interposed between the corresponding stator end face and a portion of the support surface of that casing part.

Abstract: A motor vehicle battery charging installation includes an alternator/rectifier combination which is controlled by a voltage regulator and is connected to the battery. A warning lamp is connected in series with the collector-emitter of a control transistor across the battery. The voltage at the base of the control transistor is determined by a resistor/capacitor/diode network connected to the rectifier output and to a phase point of the alternator to turn the lamp on whereas the alternator is producing no output. A zener diode is connected to the rectifier output and to an auxiliary input of the regulator to take control should the connection between the alternator and the battery become interrupted. Current flow through this zener diode is detected by a second transistor with its collector-emitter parallel with the first-mentioned transistor so as overridingly to illuminate the lamp in the event of the zener diode becoming conductive.